23
for the technician
First firing, regulation and servicing instructions
— On “SE” models, plug silicon rubber pipe on “Vent” plug [3] on gas valve. WARNING: after
plugging the pipe on “Vent” plug, the value on manometer may decrease due to pressure com-
pensation. This is normal and doesn’t require any further adjustment;
— fully screw outlet pressure tapping point screw [1] and check for gas leaks.
Regulation programming
All these operations must be performed by QUALIFIED TECHNICIANS ONLY. Operations
performed by not qualified persons can cause MALFUNCTIONS and/or DAMAGE. Hermann
cannot be considered liable for eventual damages caused by not qualified persons.
Do not modify default settings if not necessary
GENERAL PROCEDURE
— With control panel in normal position, open its cover and turn off boiler pushing
knob:
green light flashes:
— Keep both knobs
(Summer/Winter) and pushed for 5 seconds contemporary: display
shows “service” with a number on the left (from here on called ‘PARAMETER’) and another
number on the right (from here on called ‘VALUE’);
— Select number of PARAMETER to be modified pushing knobs
and ; change VALUE
by pushing and .
— To STORE a new value push
. If you want NOT to store the value, do NOT push but
simply select another parameter (by pushing or ).
— To quit programming mode push
.
Note: Once quitted program mode, it is necessary to wait about 90 seconds for complete motorised
mixing valve calibration. Such delay can be temporary excluded through programming parameter
n°9 described here below.
630A
To edit the
VALUE
To select the
PARAMETER
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